Product Design Engineer - Mechanical

Location: Mumbai, Goregoan East

Type: Full time

Experience: 4–8 years The Role

Cosy is building modular indoor farms designed to grow fresh produce directly where it is consumed.

We’re looking for a Product Design Engineer who can take our current farm system and engineer its next generation - not simply make drawings.

You will own the mechanical evolution of the product from concept → CAD → prototype → testing → manufacturing → field feedback → redesign.

Your objective is straightforward but difficult:

Your mandate is to turn our current farm into a world-class, production-ready product - engineered for reliability, manufacturability, serviceability and scale, while achieving an aggressive cost structure suited to the Indian market.

The goal isn’t simply to make the product work. It’s to make it simpler, smarter, more robust and dramatically more cost-efficient with every iteration.

What You’ll Own

Mechanical architecture of Cosy’s farming units

3 D modelling, assemblies and production drawings in Solid Works

Design for manufacturing and assembly (DFM/DFA)

Sheet-metal, fabricated structures, plastics, insulation/enclosures and other manufacturing processes

Mechanical integration of HVAC/cooling, water systems, pumps, tanks, lighting and electronics

Material selection, tolerances, fits and component specification

Prototype development and engineering validation

Design testing, failure analysis and iterative improvement

BOM simplification and aggressive cost engineering

Designing for reliability, cleaning, maintenance and serviceability

Technical coordination with fabricators and component vendors

Reviewing manufactured components against engineering drawings and specifications





Supporting installations and field troubleshooting when engineering involvement is required

Maintaining organised CAD, drawings, revisions and engineering documentation

What Good Looks Like

You don’t just ask

“Does it work?”

You ask

Can it have fewer parts? Can it be cheaper? Can it assemble faster? Can a technician access it easily? What fails first? Can we manufacture it locally? Can we remove this component altogether?

Within your first year, we expect you to have materially improved Cosy’s farm across:

Cost ↓ | Part Count ↓ | Assembly Time ↓ | Failure Points ↓ | Service Time ↓

while improving:

Reliability ↑ | Manufacturability ↑ | Finish ↑ | Modularity ↑ | Product Quality ↑

Who We’re Looking For

B. E./B. Tech in Mechanical Engineering, Product Design, Manufacturing Engineering, Mechatronics or a closely related discipline

Approximately 4-8 years of hands-on product-development experience

Strong command of Solid Works

Experience taking physical products from CAD into actual manufacturing

Strong understanding of fabrication and manufacturing processes

Experience developing prototypes and solving problems on the shop floor

Strong mechanical fundamentals and practical engineering judgement

Comfortable working directly with fabricators and suppliers

Evidence of having reduced cost or simplified an existing product

Comfortable working in a fast-moving environment where the product is still evolving

We Care More About This Than Your CV

Show us something you’ve actually built.

During the interview, we’d like to understand one physical product or assembly you’ve personally worked on:

What was the problem? What did you design? What manufacturing decisions did you make? What failed? What did you change? And how did the final product become better or cheaper because of your engineering?

We’re looking for someone who enjoys building real things.

📌 Sr. Product Design Engineer (Mumbai)
🏢 Cosy Farms
📍 Mumbai